Automatic water-gage.



U MTM) SIAllls Specication of Letters Patent.

Patented May 29, 1906.

Application led March 23, 1905. Serial No. 251,617.

T 'ILZ whom may concern,.-

Beit known that I, NORMAN OSCAR FLEM- ING, a citizen of the UnitedStates, residing at Mansfield, in the county of Richland and State ofOhio, have invented a new and useful Automatic Water-Gage, of which thefollowing is a specification.

My invention relates to water-gages for i vrsteam-boilers, and has forits\object to prois broken by any means.4

vide a garethat will automatically cut oif the flow o steam and water ifthe glass tube glass tube, B the up er casing, and C the ower casing, inwhic the Aglass tube Vis secured by the water-tight stuiIing-boxes b andI, c, the `casings being connected together by 'a guard-rod Cf, whichprotects the glass tube A, each ofA the casings being provided with ascrew-threaded plug D, connected to the boiler, and forms a passage E,which allows 'steam and water to enter through the passage F to thechamber G, which is provided with a screw-threaded ol'set G', on whichis screwed a cap H, havin the screw-threaded sion extension H', carryingt e cut-of-valve stem I, the head I', which 1s seated when closed in thevalve-seat J2, formed in the partition J between the chamber G and thepassage J, leadin into the glass tube. On the extenof the cap H isscrewed a hand-wheel K, provided with an outwardly-extending casing K',the end of which is provided with a set-screw K2, whichengages the endof the valve-stem I. The stem I extends through the cap H and the plugH2, which is-screwed into the recess H5, compressing the packing .H, andis surrounded by a coil-spring ll,

which prevents the valve from closing accidentally when the boiler iscold or out of commission. i The stem I is also provided with an enlarement I2, whichv alwaysrests in the recess formin a steam-tight joint.

The passage'l 'and the passage J 'of the casing B are connected togetherby an auxiliary passage L, which is provided with a valveseat Lf, inwhich is a needle-valve L2, the valve Working in the extension E of thepassage E and is of the ordinary construction. By connecting thepassages by the auxiliary passage controlled by valve I provide meansfor allowing steam to enter the glass gradually, so that all danger ofthe glass tube being broken by the sudden rush of steam and water isprevented. At the end of the passage E, I provide a valve-seat E2, inwhich the head F of the valve-stem F2 rests when closed, the valve beingcarried by a screwplug F3, screwed into the oflset F4 of the passage F.By this the complete supply of steam and water may be cut o ii', so thatthe chainber Gr can be cleaned without stopping the delivery of steam.

By constructing a water-gage as described it will be seen that the valvewill work automatically if the glass tube should break, as the suddenrush of steam and water against the head I 'of the valve-stern l willclose the passage J, thereby preventing any damage being done by theoverflow of water if the engineer should happen not to be near.

It will'be seen that l provide means so that the falve can be operatedby the hand, if desire It will be seen by connecting the'passages of oneof the casings by an auxiliary passage controlled by a valve I provide agage that will prevent the breaking of the glass tube, as now is thecase when a new glass tube has been inserted and the flow of steam andwater is allowed to rush into the tube before it has time to becomeheated to the temperature of the boiler.

It will be noted that owing to sectional arca of the stein l on one sideof the valve J the area upon which the steam can act is less on thisside than upon the opposite side, where the entire cross-sectional areaof the valve is acted upon bythe steamllaving thus fully described myinvention, what l claim as new, and desire to secure bv Letters Patent,is-

l. In a water-gage for boilers, the combination with an upper and lowercasing, of a glass tube connecting the said easings, a plug carried byeach casing, for connecting it to the boiler, a vpassage formed in theplug, a chamber provided with an automatic valve closing a passageleading to the glass tube and a passage connecting the passage in theplug to the passage leading into the glassI tube I and anauxiliary valveadaptedto clo'se the passage connecting the plug to the chamber, for thepurpose described'. Y

2. In a water-'gage for' boilers, the combination with an upper andlower casing, of a glass tube connecting the said casings, means carriedby each casing for securing `it to the boiler, aI passage leading intothe casing pro-` vided With a valve-seat at its end, a chamber providedwith an automatic valve closing the passage leading to the 'glass tube,Iand an auX- iliary valve closing the passage leading into the casing anda passage connecting the said passages, as set forth. I l

3. ln a Water-'gage for boilers, the combination with an upper and-lower casing, of a glass tube connecting the said casings, a plug I'provided with a passage leading-into a chan1- ber in each casing, apassage leading into the glass tube, means for closing said passage, andmeans for closing the passage in the plug and an auxiliary passageconnecting the' pase. sage in the plug to the passage leading totheglass tube, for the purpose described.

4. In a Water-gage for boilers, the combination with an upper and lowercasing, of a glass tube connecting said' casings, a plug provided with apassage leading into a chamber in said casing,'a valve-seat formedatthe, end `of said passage a 'valve Working in. said -Q chamber,adaptedftbe seated in said valve' seat, a passage leading from saidchamber to Ithe-glass tube, a valve closing said passage -and a passageconnectmg the two said passages controlledby avalve for vthe purposedescribed.

5. In a water-gage for boilers, the combination with an upper and lowercasing, connected by aglass tube, a passage leading into the casingprovided with a yvalve-seat, at'its end, a chamber connected to the saidpassage eading into each chamber, a passage leading A from each casing,a glasstube connecting said passages and a passage connecting thepassage in the plug, with the passage leading to the glass Lube, for'the urpose described.

NORMAN-QSE R FLEMING. Witnesses :vn p

J. ROWLAND BROWN, WILLIAM'MARTIN.'

